Bipartite communities via spectral partitioning

Journal of Combinatorial Optimization - In this paper we are interested in finding communities with bipartite structure. A bipartite community is a pair of disjoint vertex sets S, $$S'$$ such...     

Contested theories of prison labor practice

In recent years, prison strikes and controversies have brought public attention to the systemic problems with prison labor in the United States. Such labor often exploits people who are imprisoned to do work that is vital to society—including firefighting, farming, or manufacturing consumer goods—with wages that can be less than a dollar per hour in highly coercive working conditions. Although there is call to end prison labor today, theories of prison labor have historically been contested, even among activists and progressive reformers. Accordingly, this review offers a short sociological history of labor in correctional environments, highlights contemporary controversies, and argues for a more fine-grained approach to the relationships among labor, prisons, and reentry. It traces the field of reformers and scholars that have made arguments for punitive, rehabilitative, restorative, and transformative approaches to work. The contested theories of prison labor across time and space suggest that a better understanding is needed of what makes labor exploitative and what forms of labor have the potential to transform the root causes of crime, within and beyond prison walls. Overall, this review has implications for those who study prison and reentry programs, relationships between crime and community, and the political economy of incarceration.     

Depression,anxiety, and tobacco use: Overlapping impediments to sleep in a national sample of college students

ABSTRACT

Objectives: To examine how tobacco use and depression/anxiety disorders are related to disturbed sleep in college students. Participants: 85,138 undergraduate respondents (66.3% female, 74.5% white, non-Hispanic, ages 18–25) from the Spring 2011 American College Health Association–National College Health Assessment II database. Methods: Multivariate analyses of tobacco use (none, intermediate, daily) and mental health (diagnosed and/or symptomatic depression or anxiety) were used to predict sleep disturbance. Results: Daily tobacco use was associated with more sleep problems than binge drinking, illegal drug use, obesity, gender, and working >20 hours/week. Students with depression or anxiety reported more sleep disturbances than individuals without either disorder, and tobacco use in this population was associated with the most sleep problems. Conclusions: Tobacco use and depression/anxiety disorders are both independently associated with more sleep problems in college students. Students with depression and/or anxiety are more likely to be daily tobacco users, which likely exacerbates their sleep problems.     

Investigating Possible Effects of Ethnicity and Age on Gambling as an Escape

Previous research has shown that there are a number of risk factors for disordered and problem gambling, including an individual’s ethnicity and age. Endorsing gambling as an escape has also been shown to contribute to and maintain disordered gambling. The present study examined potential interactions between ethnicity and age as they relate to disordered gambling, as well as if ethnicity and age would be predictors of endorsing gambling as an escape. Three hundred fifteen adults from the United States completed measures relating to gambling. Participants were grouped into ethnic categories of Caucasian and non-Caucasian, and age groups of 18–25, 26–35, 36–55, and 56 years old and above. Non-Caucasians reported more gambling problems than Caucasians. A significant interaction was found between ethnicity and age for 36–55 year olds. Overall, participants were more likely to gamble for positive than negative reinforcement. However, only gambling as an escape was a significant predictor of disordered gambling. Implications and limitations are discussed with the thought that these results are informative to practitioners treating disordered gambling.     

Social-ecological innovation: adaptive responses to urban environmental conditions

Novel approaches to natural resource management, particularly those which promote stakeholder participation, have been put forward as fundamental ingredients for establishing resilient, polycentric forms of environmental governance. This is nowhere more pertinent than in the case of the complex adaptive systems associated with urban areas. Decentralisation of urban green space management has been posited as an element thereof which, according to resilience thinking, should contribute to the adaptive capacity of cities and the ecosystem services upon which they rely. Implicit in this move towards increased adaptive capacity is the ability to manage through innovation. Although the importance of innovation towards system adaptability has been acknowledged, little work has thus far been carried out which demonstrates that innovative use of urban green space represents a form of adaptive response to environmental conditions. The current paper reports on research which maps examples of organised social-ecological innovation (OSEI) in an urban study area and evaluates them as adaptive responses to local environmental conditions which may contribute to system resilience. The results present OSEI as a coherent body of responses to local social and environmental deprivation, exhibiting diversity and adaptability according to individual contexts. The study therefore provides evidence for the importance of local stakeholder-led innovation as in the building of adaptive capacity in urban social-ecological systems.     

Nonstandard parental employment schedules and father involvement

This study assesses the impact of nonstandard employment schedules (shift work) on parenting among US fathers of young children in dual-earner couples. The outcomes examined include total caregiving, caregiving without the mother present, and the elements of father involvement proposed by Pleck: positive engagement, warmth, and control. Models with latent variables and with lagged dependent variables are estimated using three waves of nationally representative data from the Early Child Longitudinal Study – Birth Cohort. The results indicate that employment scheduling mainly shapes the context in which involvement takes place. Compared to dual-earner couples who are each employed during the day, fathers in couples in which at least one parent has a nonstandard schedule tend to care for their children more in the mother's absence. To a more limited extent, they also do more caregiving overall. These effects are most conclusively found when the father works during the day and the mother works during the evening, when the mother works during the day but the father works a night, split, rotating, or other shift, and when both parents have nonstandard schedules. Parental work schedules, however, have little impact on father involvement aside from care.     

The big data divide and its consequences

Recent advances in technology and the increasing volumes of data that they enable have led to a wave of scholarly and popular attention to big data. While big data is often heralded for its ability to provide insight, the data, its analysis, and its outcomes are not evenly distributed. Currently, scholarship on big data is extending past work on the digital divide, theorizing a new big data divide. While this work most directly addresses the issues of ownership and access to big data, some work extends the divide to issues relating to skill and use. This extension opens up new complications relating to identity, social sorting, use, agency, and global development that are inextricably related to the issues above and to the study of big data. These issues go beyond the simple language of the digital divide extending inquiries into the realm of digital inequalities more generally. Any work on big data and the big data divide needs to engage with a more broad‐based notion of digital inequalities to be better equipped to handle the complex issues above, as well as the material, democratic, and identity problems that big data bring about.     

Social,Relational and Network Determinants of Unprotected Anal Sex and HIV Testing Among Men Who Have Sex with Men in Beirut,Lebanon

Objectives: We examined the social, relational and network determinants of condom use and HIV testing among men who have sex with men (MSM) in Beirut. Methods: Two-hundred thirteen men were recruited via respondent driven sampling and administered a survey. Results: Sixty-four percent reported unprotected anal intercourse (UAI), including 23% who had UAI with unknown HIV status partners (UAIU); 62% of participants had tested for HIV. In multivariate analysis, being in a relationship was associated with UAI and HIV testing; lower condom self-efficacy was associated with UAIU and HIV testing; gay discrimination was associated with UAIU; MSM disclosure was associated with UAI, UAIU and HIV testing; and network centralization was associated with HIV testing. Conclusions: Multi-level social factors influence sexual health in MSM.     

Student Veteran Career Transition Readiness,Career Adaptability,and Academic and Life Satisfaction

Student military veterans pursuing higher education present with unique career development needs. To better understand these needs, the authors conducted an exploratory study to examine career transition readiness, career adaptability, academic satisfaction, and satisfaction with life among 134 student military veterans (34 women, 100 men). Results indicated statistically significant positive correlations between satisfaction with life scores and scores on measures of career transition readiness and career adaptability. Regression results demonstrated that career transition readiness and career adaptability predicted satisfaction with life, but not academic satisfaction. The findings suggest a need to understand the complexity of student veterans’ career and academic development in both research and practice.